Can you open http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html from mainland China?
Sometimes.
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Access hyperphysics.phy-astr.gsu.edu with GreatFireVPN →Frequently asked questions
Is http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html blocked in mainland China right now?
As of the last test on 2026-08-19, http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html is 100% disrupted in mainland China, based on GreatFire's live Great Firewall measurements.
Why is http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html blocked in mainland China?
Access is unreliable — 100% of the last 1 conclusive tests showed interference.
Since when has http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html been blocked?
GreatFire has recorded interference with http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html from mainland China since 2019-11-01.
How can I access http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html from mainland China?
You need a circumvention tool such as a VPN. GreatFireVPN, built by GreatFire, is designed to bypass the Great Firewall and reach sites like hyperphysics.phy-astr.gsu.edu.
http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html · JSON